Few traces from the Palaeolithic period are to be found in Sobrarbe, but still, they are enough to reveal the human presence in this county from 40.000-10.000B.C. Most remarkable findings are some basic artistic depictions, known as maccaroni, consisting in some strokes on a wet clay surface, found in the Forcón cave, in the Ferrera Hills, and remains of a deer's horn found in the Añisclo Canyon, with marks of human carving.
Some remains from the Neolithic period also show that there were human settlements in Sobrarbe at that time. Out of the eight relevant sites with Neolithic rests in the province of Huesca, four of them are found in Sobrarbe: Huerto Raso in Lecina, la Espluga de Puyascada and el Forcón in San Juan de Toledo and la Miranda in Palo.
Significant pottery fragments have been found in El Forcón, Puyascada and Miranda caves. In La Espluga de Puyascada, besides the pottery, some polished axes, bone punches, necklace beads and some bones of pets and wild animals have been discovered. Campaniforme pottery has also been retrieved. In this caves, Bronze and Copper Age remains have also been found, which means they were permanent settlements.
In reference to the Upper Palaeolithic Art, also known as Naturalistic Art, the eastern side of the Sierra de Guara, where the Vero River Cultural Park can be found, is the best example of this artistic expression. Sites within this park belonging to Sobrarbe County are Fajana de la Pera, las Escaleretas, Gallinero, Cueva Peña Miel, Huerto Raso, Muriecho, La Choca and Barfaluy, all of them belong to the municipalities of Lecina-Bárcabo and Malifeto (Betorz-Bárcabo)
Especially worthy to be mentioned are the Megalithic monuments: the dolmen in Tella or Losa de la Campa, and La Capilleta (the little chapel) in Paules de Sarsa.